/in/foo.cc: In function 'void build(int, int, int)':
/in/foo.cc:23:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=l+r>>1;
          ~^~
/in/foo.cc: In function 'long long int query(int, int, int)':
/in/foo.cc:33:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=d[ro].l+d[ro].r>>1;
          ~~~~~~~^~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:44:19: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
   scanf("%d",&a[i]);
                   ^